BuildId in the UE4Editor.version file for a local binary build will sometimes be updated when a hot reload is performed

UE - Foundation - Core - Feb 10, 2018

Performing a hot reload on a project that is using a local binary build of the Engine will sometimes result in the Engine's UE4Editor.version file being updated with a new BuildId value. That result ...

Widget 3D Component is not rendering on specific Android devices

UE - Platform - Mobile - Nov 20, 2015

Widget 3D Component isn't rendering properly on the Samsung devices. I've tested on the Samsung Galaxy Note 2, Samsung Nexus S, Samsung Galaxy S3. I'm not having any trouble on the Nexus 5 though. ...

Volumetric fog flicker side screen

UE - Rendering - Architecture - Nov 29, 2023

The flicker is visible in Epic scalability as well, it is just smaller on screen because the fog voxels are smaller (r.VolumetricFog.GridPixelSize). ...

AIPerception components inherited from a native parent class do not expose the DetectionByAffiliation field on senses for editing in the Blueprint editor's Details view.

UE - Gameplay - Blueprint - Dec 15, 2017

The "Detection by Affiliation" field cannot be edited in the Blueprint editor's Details view for an inherited AIPerception component in the "Senses Config" array if the AIPerception component is inh ...

Return values are not saved in blueprint functions

UE - Gameplay - Blueprint - Sep 1, 2017

Blueprint function return nodes don't save any settings applied directly to the return node itself. Regression: Yes - this behavior does not occur in 4.16.3 (CL 3561208) ...

NumNonClothingSections logic is bad

UE - Editor - Content Pipeline - Datasmith - Jul 26, 2019

We use the NumNonClothing section number to iterate in the sections, this is an error if the cloth sections are not at the end of the sections array. See the following picture of a search on NumNonC ...

GoogleVR fails to package with Gradle

UE - Platform - Mobile - Aug 10, 2017

Packaging with GoogleVR (Daydream) fails with Gradle enabled: https://answers.unrealengine.com/questions/678203/417-exporting-daydream-project-with-gradle-results.html ...

Can't save BPs after stopping automation tests

UE - Automation Test - Jan 5, 2018

User reported that they are unable to save assets after running tests: https://answers.unrealengine.com/questions/742429/cannot-save-or-change-assets-after-running-a-autom.html ...

Ensure after reparenting Blueprint and moving a property to the new parent

UE - Gameplay - Blueprint Editor - Jul 20, 2023

Moving a property from a recently reparented BP to its new parent will assert in  FBlueprintCompileReinstancer::MoveDependentSkelToReinst at  ensure(PrevStructSize == NewStructSize) This only see ...

Renaming actors between levels during PIE causes issues

UE - World Creation - Worldbuilding Tools - OFPA - Dec 4, 2023

When renaming actors during PIE the actor generates a new, non memory/temporary, actor package underneath the PIE world- this is then causing checks in EnumerateMemoryAssetsHelper (in AssetRegistry. ...